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arXiv 1802.00639nucl-thhep-ph
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形变核的Nilsson模型在相对论重离子碰撞中的应用

Application of Nilsson model for deformed nucleus in relativistic heavy ion collisions

S. K. Tripathy, M. Younus, P. K. Sahu, Z. Naik

摘要:

电子散射方法,涉及核有很少或没有内在的变形建议核子分布的费米型。该分布被进一步参数化为Wood Saxon(WS)分布,其中已经实现了具有平滑表面的均匀电荷密度。除了WS中的形状修改之外,早期的尝试是为了解释变形核碰撞中的可观测性,例如带电粒子多重性。在这项工作中,我们使用另一种方法称为Nilsson模型或修正的谐振子(MHO),来解释在顶部RHIC能量的U+U碰撞带电粒子多重性。我们已经实现了HIJING模型的形式主义,我们发现,该模型描述的实验数据在一定程度上。

英文摘要:

Electron scattering methods, involving nucleus which have little or no intrinsic deformation suggest nucleon distribution to be of Fermi type. This distribution is further parameterised as Wood Saxon (WS) distribution, where an uniform charge density with smoothed-out surface have been implemented. Incorporating shape modification in WS, earlier attempts were made to explain observables in deformed nuclear collisions, such as charged particle multiplicity. In this work, we use an alternate approach known as Nilsson model or Modified Harmonic Oscillator (MHO), to explain charged particle multiplicity in U+U collisions at top RHIC energy. We have implemented the formalism in HIJING model and we found that the model describes the experimental data to an extent.

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